CN209059343U - Surgical burr support assembly and burr - Google Patents

Abstract

The utility model discloses a kind of operation abrasive drilling support components and its abrasive drilling, wherein support component includes inner support tube, outer support pipe and water filling component, the outer support pipe is coated at inner support tube, inner support tube and outer support pipe radial spacing are arranged and are formed the water stream channel axially arranged, the water filling component connection is set to the rear end of water stream channel.The utility model can be effectively isolated crusher drill and its hetero-organization, and crusher drill is avoided to injure others, meanwhile, water stream channel is set in support component, effective temperature-reducing processing can be carried out to the bistrique of front end, avoids the other tissues of heat burn of bistrique.

Description

Surgical burr support assembly and burr

technical field

The utility model relates to the field of medical instruments, in particular to a surgical drill support assembly and a drill.

Background technique

In medical operations, drill tools are usually used to grind the bone tissue in the body. The existing grinding methods for bone tissue include manual and electric, and their structures are relatively coarse, which cannot be used for some surgical sites with small operating space. To achieve fine grinding, such as surgery in the ear or nose. Especially in the actual surgical process, the rear side of the high-speed rotating grinding rod in the electric grinding method is easy to damage other tissues, and the front-end grinding hair is also likely to cause burning damage to the tissue after heating.

Utility model content

In view of this, the purpose of this utility model is to overcome the defects in the prior art, and to provide a surgical grinding drill support assembly and its grinding drill, which can effectively avoid the damage of other tissues, and is convenient to operate, and effectively avoids the effect of heat on grinding hair. Searing damage to tissue.

The surgical drill support assembly of the utility model comprises an inner support tube, an outer support tube and a water injection assembly, the outer support tube is sleeved on the inner support tube, and the inner support tube and the outer support tube are arranged at radial distances and form an axial arrangement the water flow channel, the water injection component is connected to the rear end of the water flow channel.

Further, the water injection assembly is communicated and arranged at the rear end of the water flow channel in a manner of being rotatable around the central axis of the outer support pipe.

Further, the water injection assembly includes a water injection nozzle fixed on the outer support pipe, a water injection hole is opened on the rear side wall of the outer support pipe, the water injection nozzle is aligned and communicated with the water injection hole, and the water injection nozzle is connected with the water injection hole. The water inlet is sealed connection.

Further, the water injection assembly includes a water injection jacket that is rotatably sleeved on the outer support pipe and a water injection nozzle fixed to the water injection jacket, the rear side wall of the outer support pipe is provided with at least one water injection hole, and the water injection jacket is located at the water injection hole. The water injection jacket and the water injection hole form an annular water injection channel, and the water injection nozzle communicates with the water injection hole through the annular water injection channel.

Further, the inner wall of the water injection jacket is recessed inward to form an annular groove, and the annular groove and the outer wall of the outer support pipe are surrounded to form the annular water injection channel; or the water injection hole is a radial circumference around the outer support pipe. The annular through hole is surrounded by the inner wall of the water injection jacket to form the annular water injection channel; or the water injection jacket and the outer support pipe are arranged at a radial distance to form the annular water injection channel.

Further, a front sealing ring and a rear sealing ring respectively located on both sides of the water injection hole are arranged between the water injection jacket and the outer support pipe.

Further, the front end of the water injection sleeve is provided with a positioning sleeve for fixing the outer support pipe, and the rear end is provided with a connecting sleeve fixed on the outer support pipe, the inner circle of the rear end of the positioning sleeve and the inner circle of the front end of the connecting sleeve are equal to each other. The outer ring platform is formed after being recessed radially outward, and the outer circles at both ends of the water injection jacket are recessed radially inward to form an inner ring platform that overlaps with the corresponding outer ring platform.

Further, the rear end of the outer support tube is fixedly provided with a connecting sleeve, and the inner cavity of the rear end of the connecting sleeve is sequentially provided with a guide sleeve, a bearing and a screw plug in the axial direction from front to back, and the screw plug thread is internally sleeved on the The inner cavity of the rear end of the connecting sleeve is axially locked and squeezed to fix the bearing and the guide sleeve.

Further, the front end of the drill support assembly is provided with water outlet holes for water outlet along the axial direction, and the water outlet holes are multiple and distributed at intervals along the circumferential direction.

Further, it also includes a top sleeve supported between the inner support tube and the outer support tube in the radial direction, the inner wall of the top sleeve is recessed to form a plurality of axially inner strip-shaped grooves distributed at intervals in the circumferential direction, and the axial inner strip-shaped grooves The water outlet hole is formed around the inner wall and the outer wall of the inner support pipe.

Further, the front end of the top sleeve extends forward in the axial direction to form an extension section located at the front ends of the inner support tube and the outer support tube, the axial inner strip groove penetrates the extension section, and the inner sleeve of the extension section is provided with a shaft. a sleeve, the rear end of the shaft sleeve is reduced in diameter after the outer circle is reduced, and the inner sleeve is fixed on the front end of the inner support tube.

Further, the outer wall of the shaft sleeve and the axially inner strip groove surround the front section forming the water outlet; or the outer circumference of the shaft sleeve is provided with an axially outer strip corresponding to the surgical axial inner strip groove A groove, the surgical axial inner strip groove and the axial outer strip groove are combined to form the front section of the water outlet hole.

The utility model also discloses a grinding drill, which comprises a grinding drill handle, a grinding drill bit and a surgical grinding drill support assembly of the above structure. The surgical grinding drill supporting assembly is sleeved on the grinding drill bit, and the surgical grinding drill supports The assembly is fixed to the drill handle in a length-adjustable manner.

The beneficial effects of the present utility model are as follows: the surgical drill support assembly and the grinder disclosed by the present utility model can effectively isolate the grinder bit from other tissues and avoid the damage of the grinder bit to others. At the same time, the support assembly is provided with The water flow channel can effectively cool the grinding head at the front end, so as to prevent the heat of the grinding head from burning other tissues.

Description of drawings

Below in conjunction with accompanying drawing and embodiment, the utility model is further described:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is an enlarged view at A in Fig. 1;

Fig. 3 is the structural representation of the top sleeve in the utility model;

Fig. 4 is the structural representation of the utility model middle grinding drill;

Description of reference numerals: 1. Inner support pipe; 2. Outer support pipe; 3. Water injection jacket; 4. Water injection nozzle; 5. Water injection hole; 6. Front sealing ring; 7. Back sealing ring; 8. Positioning sleeve; 9 , connecting sleeve; 10, inner ring platform; 11, outer ring platform; 12, guide sleeve; 13, bearing; 14, screw plug; 15, top sleeve; 16, axial inner strip groove; 17, shaft sleeve; 18 , annular plug; 19, grinding drill handle; 20, grinding drill bit; 21, rotating lock sleeve; 22, inner limit step; 23, outer limit step; 24, axial outer strip groove.

Detailed ways

Fig. 1 is the structural representation of the present utility model, Fig. 2 is the enlarged view of A in Fig. 1, Fig. 3 is the structural representation of the middle top sleeve of the present invention; Fig. 4 is the structural representation of the utility model middle grinding drill; As shown, the surgical drill support assembly in this embodiment includes an inner support tube 1, an outer support tube 2 and a water injection assembly, the outer support tube 2 is sheathed on the inner support tube 1, and the inner support tube 1 and the outer support tube 2 The water flow channels are arranged at radial intervals and form axially arranged water flow channels, and the water injection assembly is communicated and arranged at the rear end of the water flow channel; specifically, the grinding bit is installed in the grinding drill support assembly, and the grinding bit includes a grinding rod and is connected to the front end of the grinding rod. The grinding head, the grinding rod rotates and is sleeved on the inner support tube 1, the grinding head extends out of the inner support tube 1 for grinding, the rear end of the drill support assembly is installed on the front end of the drill handle, and the inner and outer support tubes 2 A radial support is arranged between them to ensure a stable radial distance. There are various ways of radial support. For example, an annular plug 18 is arranged between the rear ends of the inner support pipe 1 and the outer support pipe 2 in the radial direction. The annular plug 18 is used to block the end of the water flow passage. The annular plug 18 It is also used to form radial support at the rear ends of the inner support tube 1 and the outer support tube 2; a top sleeve 15 can be arranged between the front ends of the inner support tube 1 and the outer support tube 2 along the radial direction to form the inner support tube 1 Radial support with the front end of the outer support tube 2; a plurality of support platforms can also be arranged in the middle section of the inner support tube 1 and the outer support tube 2 to form radial support. The rear end of the support assembly is indicated near the end of the drill handle, and vice versa. The front end of the water flow channel is provided with a water outlet, and the rear end is provided with a water injection component. The water injection component is specifically a connection component for connecting and installing a water injection pipe. When the cooling water flows through the water injection assembly through the water injection pipe, and finally flows into the water flow channel, on the one hand, the cooling water forms a cooling barrier between the inner and outer support pipes to prevent the grinding bit from transferring heat to the outer support pipe. The operator can hold it by hand. The outer support tube is used to control the operating position of the grinding bit more accurately; on the other hand, the cooling water takes away the heat transferred from the grinding rod to the inner support tube, which is conducive to cooling the grinding rod and improving the life of the grinding rod; third, The cooling water can also flow out through the water outlet at the front end of the water flow channel to cool down the grinding head and avoid tissue burning damage; fourth, due to the setting of the double-layer support tube, the cooling water will not directly contact the grinding rod, avoiding the cooling water to the grinding rod. The resistance caused by the rotation of the grinding rod ensures the rotating grinding efficiency of the grinding bit.

It can be seen from the above that in this embodiment, the grinding head can be effectively isolated from other tissues through the support assembly, so as to avoid the damage of the grinding head to other tissues. The heat from the head burns other tissues.

In this embodiment, the water injection assembly is connected and arranged at the rear end of the water flow channel in such a way as to be rotatable around the central axis of the outer support pipe 2; After connecting to the water injection assembly, no matter what angle the operator uses to hold the drill and the handle of the drill, the cooling water pipe can be adjusted to a comfortable position by rotating the water injection assembly, or the cooling water pipe can drive the water injection assembly to sag naturally. Effectively avoid the interference of the cooling water pipe to the grip, and improve the efficiency of the operation.

In one embodiment, the water injection assembly includes a water injection nozzle 4 fixed to the outer support pipe 2 , a water injection hole 5 is opened on the rear side wall of the outer support pipe 2 , and the water injection nozzle 4 is aligned and communicated with the water injection hole 5 . , the water outlet of the water injection nozzle 4 is sealed with the water inlet of the water injection hole 5 . When the water injection assembly rotates around the central axis of the outer support pipe 2, the water injection nozzle 4 drives the outer support pipe 2 to rotate circumferentially; if the outer support pipe 2 and the inner support pipe 1 are circumferentially fixed, the inner support pipe 1 will follow the outer support pipe 2. Circumferential rotation; if the outer support tube 2 and the inner support tube 1 are slidable in the circumferential direction, the circumferential sliding and radial support of the outer support tube 2 and the inner support tube 1 can be realized by means of bearings, sealing rings, etc. In addition, the water injection assembly may further include a water injection jacket 3 that is sheathed on the outer support pipe 2, the water injection nozzle 4 penetrates and is fixed to the water injection jacket 3, and the water injection jacket 3 is arranged to help strengthen the connection between the water injection nozzle 4 and the water injection hole 5; When the water injection assembly rotates around the central axis of the outer support pipe 2 , the water injection jacket 3 and the water injection nozzle 4 rotate together. The above structure makes the drill support assembly simple in structure and easy to process.

In another embodiment, the water injection assembly includes a water injection jacket 3 that is rotatably wrapped around the outer support pipe 2 and a water injection nozzle 4 fixed to the water injection jacket 3. The rear side wall of the outer support pipe 2 is provided with at least one water injection hole. 5. The water injection jacket 3 is located at the water injection hole 5, the water injection jacket 3 and the water injection hole 5 form an annular water injection channel, and the water injection nozzle 4 is communicated with the water injection hole 5 through the annular water injection channel; When the central axis of the drill rotates, the outer support tube 2 and the inner support tube 1 are both fixed in the circumferential direction, which is beneficial for the operator to hold the outer support tube 2 to achieve precise control of the drill position. Further, there are various ways for the water injection jacket 3 and the water injection hole 5 to form the annular water injection channel. The outer wall of the pipe 2 is the annular water injection channel, and the water injection nozzle 4 and the water injection hole 5 communicate with the annular groove; The outer support pipe 2 is separated into two front and rear sections, the annular through hole and the inner wall of the water injection jacket are surrounded to form the annular water injection channel, and the water outlet of the water injection nozzle 4 corresponds to the position of the annular through hole; in the third implementation In the example, the water injection jacket and the outer support pipe are arranged at a radial distance to form a gap, and the gap forms the annular water injection channel. In the above three ways, no matter how the water injection assembly rotates in the radial direction, the water injection nozzle 4 and the water injection hole 5 are all connected, and the structure is simple, easy to assemble, and has a good water injection effect. Specifically, the water injection holes 5 can be one or more. When there are multiple water injection holes 5, the plurality of water injection holes 5 are distributed at intervals along the circumference of the outer support pipe 2, and the water injection holes 5 can be round holes or waist-shaped. hole.

Further, a front sealing ring 6 and a rear sealing ring 7 located on both sides of the water injection hole 5 are provided between the water injection jacket 3 and the outer support pipe 2; as shown in the figure, the water injection nozzle 4 can be fixed to the water injection vertically or obliquely. On the sleeve 3, the inner circular part of the water injection sleeve 3 is radially recessed to form an installation ring groove for installing the sealing ring. The front sealing ring 6 and the rear sealing ring 7 are O-shaped sealing rings. By rotating the water injection sleeve 3 The rotation of the water injection nozzle 4 can be realized, the structure is simple, and the processing, assembly and use are convenient.

In this embodiment, the front end of the water injection sleeve 3 is provided with a positioning sleeve 8 that is fixedly sleeved on the outer support pipe 2 , and the rear end is provided with a connection sleeve 9 fixed to the outer support pipe 2 . The circle and the inner circle at the front end of the connecting sleeve 9 are recessed radially outward to form an outer ring platform 11 , and the outer circles at both ends of the water injection sleeve 3 are recessed radially inward to form a lap joint with the corresponding outer ring platform 11 . The matching inner ring table 10; specifically, the connecting sleeve 9 is used to install the support assembly on the drill handle. Through the lap joint of the inner ring table 10 and the outer ring table 11, the water injection jacket 3 can be positioned in the axial direction, which is beneficial to the smooth rotation of the water injection assembly; at the same time, the radial position of the water injection jacket 3 can be limited to ensure the pressure of the sealing ring. The tightening force is uniform and stable, and the sealing effect is improved.

In this embodiment, the rear end of the outer support pipe 2 is fixedly provided with a connecting sleeve 9 , the connecting sleeve 9 is used to install the support assembly on the drill handle, and the connecting sleeve 9 can also be connected to the rear end of the inner support pipe 1 . play a fixed role. The inner cavity of the rear end of the connecting sleeve 9 is provided with a guide sleeve 12, a bearing 13 and a screw plug 14 in sequence from front to rear in the axial direction; The guide sleeve 12 and the bearing 13 are extruded and fixed in the axial direction, the front end surface of the guide sleeve 12 is extruded on the side wall of the limit step arranged on the inner circle of the connecting sleeve 9, the bearing 13 is a rolling bearing, and the screw plug 14 The inner thread is sleeved on the rear end cavity of the connecting sleeve 9 and axially locks the guide sleeve 12 and the bearing 13. The bearing 13 forms a radial support to ensure high rotational stability of the grinding bit, and the guide sleeve 12 facilitates the grinding bit to guide and penetrate into the inner support At the same time, the screw plug 14 is rotated and locked and fixed, which effectively improves the installation efficiency of the grinding bit.

In this embodiment, the front end of the drill support assembly is provided with water outlet holes along the axial direction, and the water outlet holes are multiple and distributed at intervals along the circumferential direction; in one embodiment, the inner support pipe 1 and the outer support The front end of the pipe 2 forms a closed end, and a plurality of water outlet holes are opened on the closed end, so that the cooling water flows out along the axial direction of the grinding bit and then reaches the grinding head and the grinding tissue to cool and flush the grinding head and tissue. The water outlet structure is beneficial to improve the cooling efficiency, to ensure rapid cooling of the grinding head, and at the same time, to effectively flush the operation site and improve the operation window.

In this embodiment, it also includes a top sleeve 15 supported between the inner support tube 1 and the outer support tube 2 in the radial direction. The inner wall of the axially inner strip-shaped groove 16 and the outer wall of the inner support pipe 1 are surrounded to form the water outlet hole; preferably, the cross-section of the axially inner strip-shaped groove 16 is arc-shaped. The number is three or four, and they are evenly spaced along the circumferential direction, which is convenient for processing, and the size of the water flow is moderate. The outer circle of the top sleeve 15 is supported on the inner circle of the outer support pipe 2, and the inner circle of the top sleeve 15 is supported on the outer circle of the inner support pipe 1. By controlling the thickness of the top sleeve 15, the distance between the inner and outer support pipes 2 in the radial direction is ensured. The spacing is stable and reliable.

In this embodiment, the inner circle at the rear end of the top sleeve 15 protrudes radially inward to form an inner limit step 22 that is axially pressed against the front end surface of the inner support tube 1 , and the outer circle at the rear end of the top sleeve 15 is radially inward. The outer limit step 23 protrudes outward to form an outer limit step 23 that axially presses against the front end surface of the outer support tube 2. The inner limit step 22 and the outer limit step 23 form an axial limit for the inner support tube 1 and the outer support tube 2 respectively. .

In another embodiment, the front end of the top sleeve 15 extends forward in the axial direction to form an extension section located at the front ends of the inner support tube 1 and the outer support tube 2, and the axial inner strip groove 16 penetrates through the extension section, The inner sleeve of the extension section is provided with a shaft sleeve 17, and the outer circle of the rear end of the shaft sleeve 17 is reduced in diameter and then fixed to the front end of the inner support tube 1; the inner circle of the shaft sleeve 17 is matched with the grinding rod of the drill bit, It can be used for radial positioning of the grinding bit to ensure the stability of the grinding bit.

In one embodiment, the outer wall of the shaft sleeve 17 and the axially inner strip groove 16 of the extension section of the top sleeve 15 surround the front section forming the water outlet hole. The shaft sleeve 17 has a simple structure and is easy to process. In another embodiment, the outer circumference of the shaft sleeve 17 is provided with an axial outer strip groove 24 corresponding to the axial inner strip groove 16 , and the axial inner strip groove 16 is combined with the axial outer strip groove 24 A water outlet hole with a larger cross-section is formed, and the structure is beneficial to increase the water outlet flow rate of the water outlet hole and ensure a good cooling effect.

The utility model also discloses a grinding drill, which comprises a grinding drill handle 19, a grinding drill bit 20 and a surgical grinding drill support assembly with the above structure covering the grinding drill bit 20. It should be pointed out that the adjustable length of the support assembly means that the length of the support assembly exposed to the grinder handle 19 is adjustable, and the support assemblies of different lengths can be replaced, that is, the length of the support assembly itself can be changed. This can be achieved by axial sliding support assemblies. By setting the length of the surgical grinder support assembly to be adjustable, when installing different length grinder bits 20 , the exposed length of the front end of the grinder bit 20 is controlled by adjusting the length of the grinder support assembly to ensure the stability and safety of the grinder bit 20 . A rotary lock sleeve 21 can be provided on the drill handle 19 to axially lock or release the support assembly, and axially move the support assembly to realize length adjustment. The structure of the rotary lock sleeve 21 to lock or release the support assembly by rotation is an existing structure, and details are not described herein again.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should The technical solutions are modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and all of them should be included in the scope of the claims of the present invention.

Claims (13)

1. A surgical grinding drill support assembly is characterized in that: comprising an inner support tube, an outer support tube and a water injection assembly, the outer support tube is sheathed on the inner support tube, and the inner support tube and the outer support tube are arranged at radial distances and An axially arranged water flow channel is formed, and the water injection assembly is communicated and arranged at the rear end of the water flow channel. 2 . The surgical drill support assembly according to claim 1 , wherein the water injection assembly is communicated and arranged at the rear end of the water flow channel in a way that it can rotate around the central axis of the outer support tube. 3 . 3 . The surgical drill support assembly according to claim 2 , wherein the water injection assembly comprises a water injection nozzle fixed to an outer support pipe, and a water injection hole is opened on the rear side wall of the outer support pipe, so that the The water injection nozzle is aligned and communicated with the water injection hole, and the water outlet of the water injection nozzle is sealedly connected with the water inlet of the water injection hole. 4 . The surgical drill support assembly according to claim 2 , wherein the water injection assembly comprises a water injection jacket rotatably covering the outer support pipe and a water injection nozzle fixed to the water injection jacket. The end side wall is provided with at least one water injection hole, the water injection jacket is located at the water injection hole, the water injection jacket and the water injection hole form an annular water injection channel, and the water injection nozzle communicates with the water injection hole through the annular water injection channel. 5 . The surgical drill support assembly according to claim 4 , wherein an annular groove is formed after the inner wall of the water injection jacket is recessed inward, and the annular groove and the outer wall of the outer support tube ( 2 ) surround the outer wall. 6 . The annular water injection channel is formed; or the water injection hole is an annular through hole radially surrounding the outer support tube (2), and the annular through hole and the inner wall of the water injection jacket form the annular water injection channel; or The water injection jacket and the outer support pipe are arranged at a radial distance and form the annular water injection channel. 6 . The surgical drill support assembly according to claim 5 , wherein a front sealing ring and a rear sealing ring respectively located on both sides of the water injection hole are provided between the water injection jacket and the outer support tube. 7 . 7 . The surgical drill support assembly according to claim 4 , wherein the front end of the water injection sleeve is provided with a positioning sleeve for fixing the outer support tube, and the rear end is provided with a connection sleeve fixed on the outer support tube. 8 . , the inner circle of the rear end of the positioning sleeve and the inner circle of the front end of the connecting sleeve are recessed radially outward to form an outer ring platform, and the outer circles of both ends of the water injection sleeve are recessed radially inward to form a corresponding The outer ring platform is overlapped with the inner ring platform. 8 . The surgical drill support assembly according to claim 1 , wherein the rear end of the outer support tube is fixedly provided with a connecting sleeve, and the inner cavity of the rear end of the connecting sleeve is arranged in sequence from front to rear along the axial direction. 9 . A guide sleeve, a bearing and a screw plug are provided, and the screw plug thread is internally sleeved in the inner cavity of the rear end of the connecting sleeve and axially locks and squeezes the bearing and the guide sleeve to fix it. 9 . The surgical drill support assembly according to claim 1 , wherein the front end of the drill support assembly is provided with water outlet holes for water outlet along the axial direction, and the water outlet holes are multiple and spaced along the circumferential direction. 10 . distributed. 10 . The surgical drill support assembly according to claim 9 , further comprising a top sleeve supported between the inner support tube and the outer support tube in the radial direction, and the inner wall of the top sleeve is recessed to form a plurality of circumferential lines. 11 . The axially inner strip-shaped grooves are distributed at intervals, and the inner wall of the axially inner strip-shaped groove and the outer wall of the inner support pipe are surrounded to form the water outlet hole. 11 . The surgical drill support assembly according to claim 10 , wherein the front end of the top sleeve extends forward in the axial direction to form an extension section located at the front ends of the inner support tube and the outer support tube, and the axial The bar-shaped groove penetrates through the extension section, and an inner sleeve of the extension section is provided with a shaft sleeve. 12 . The surgical drill support assembly according to claim 11 , wherein: the outer wall of the shaft sleeve and the axially inner strip-shaped groove surround the front section forming the water outlet; or the outer wall of the shaft sleeve The circle is provided with an axially outer strip-shaped groove corresponding to the inner strip-shaped groove of the operation axis, and the combination of the inner strip-shaped groove of the operation axis and the axially outer strip-shaped groove forms the front section of the water outlet hole. 13. A grinder, characterized in that it comprises a grinder handle, a grinder bit and the surgical grinder support assembly according to any one of claims 1-12, the surgical grinder support assembly being sleeved on the grinder. The drill bit, and the surgical drill support assembly is fixed to the drill handle in a length-adjustable manner.